ROBERT CHESS

CIK 1227886 · Chairman of the Board · last filed 2026-03-19

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$20.13M

Companies

3

Total Filings

84

Lifetime Open-Market Net

-$13.52M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
TWST Director 63,612 $76.17 $4.85M -$4.03M 24 2026-03-19
NKTR Director 257,373 $59.38 $15.28M -$9.49M 58 2025-10-01
COTHERIX INC (CTRX) Delisted Director $0 2 2007-01-10

Recent Filings · Page 3 of 9

84 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2021-09-24 NKTR Mixed +5,600 -$82.5K EDGAR
2021-09-14 TWST Sell (S) −4,000 -$480.9K EDGAR
2021-09-10 NKTR Mixed -$40.4K EDGAR
2021-08-26 NKTR Gift (G) −2,100 $0 EDGAR
2021-07-22 NKTR Mixed -$17.2K EDGAR
2021-07-14 TWST Sell (S) −4,000 -$503.6K EDGAR
2021-06-25 TWST Sell (S) −4,000 -$480.4K EDGAR
2021-05-14 NKTR Mixed -$44.3K EDGAR
2021-04-16 NKTR Mixed -$41.4K EDGAR
2021-03-05 TWST Grant (A) $0 EDGAR
Showing 2130 of 84
Page 3 of 9
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.